With the discovery that the varroa mites are resistant to synthetic (or man-made) chemical treatments, this has prompted the kiwimana team to look at alternative or organic, treatment methods to keep our Bees alive. We found this new tool for applying Oxalic-Acid crystals, and the kiwimana team are really excited to introduce you to – the kiwi made and designed “Kiwi Oxalic Acid Vaporizer” !
The “Kiwi Oxalic Acid Vaporizer” is a vaporizer-unit which, when connected to a power-source, heats-up. Oxalic-Acid crystals are placed in the head of the vaporiser unit then from the heat-exchange, fumes are formed.
The fumes rise and are then spread around the hive by Bee-movement. The fumes leave small particles all over the hive, the small particles causes the Bees to clean, so increases bee hygiene behaviour.
The fumes, or smoke, create a kind of ‘dust particles’ which kills the mites, by what is still yet to be exactly established in research, but believed to disable the mites ability (paralysis) to feed on the bees and they die.
This product designed and quality built by a Kiwi right here in New Zealand. It’s a solid little unit, which will provide years of treatments.
The Benefits of A Oxalic acid vaporizer
- Much Cheaper – 1 grams of Oxalic acid crystals cost around 2.5 cents per application of treatment (1 colony x 4 applications = 10cents)
- Easy to use – you don’t need to open the hives to do the treatment.
- Safe to the bees – unlike dribbling Oxalic acid on Bees, using an Oxalic Acid Vaporizer doesn’t cause depressed brood rearing.
- A great addition – to form part of an Integrated Pest Management program
2017 Update: Oxalic Acid Vaporization (OAV) research, advised to us, is that you cannot overdose with Oxalic Acid Vapours – we had a struggling hive with heavy-mite-load, sac-brood in cells, deformed wings on Bees – so Margaret took advice and totally filled the head of the vaporizer and connecting to power for 3.00 minutes maximum, then disconnected from power (battery), whilst keeping the vaporizer in the hive and the entrances covered for a further 10 minutes. Margaret then treated every 3 days.
Margaret did this for 4 weeks…results has seen that they have recovered and are coming into Spring 2017 extremely strong. Margaret now treats the colony every two weeks and inspection board checks show no mites. Margaret is looking to split and will not treat while waiting for new queen to be raised because there will be a brood break while the new-season queen is mated, the older queen colony may have a brood-break as well – but – monitor cells and inspection boards for mite presence.
User Warning, Margaret believes this colony survived because the population was still quite high, with capped brood over three full-depth frames – if your colony falls below these levels, the colony may be too low and sick to recover
- BEST ADVICE !! … DON’T WAIT TIL ITS TOO LATE – assume there are mites, monitor and move away from some of the treatments that have been proved to cause resistence in the varroa destructor mite here in New Zealand. The oxalic acid vaporization method is very non-invasive as well which enables the colony to keep the temperature at a consistent level, especially if you use a kiwimana meshboard inconjunction with the kiwi oxalic acid vaporizor.
Recommendation : if you are treating with the OAV method – or if you sell Honey – it may be required that you test oxalic acid content of the honey destined for human consumption – remember oxalic acid is present in Honey as part of its natural make-up.
Interesting Point : “….today it takes less varroa mites in a colony for it to fail as the viruses are stronger….” Dr Mark Goodwin 19.08.2017. Bayvarol and Apistan has contributed to Varroa Mite resistence (ie: stronger mites) in New Zealand research results.
The “Kiwi Oxalic Acid Vaporizer” unit is connected to a 12 volt car or motorbike battery (not included) or a 12volt 7.0amp battery (not included).
The battery – when connected to the unit – heats up the head of the unit which has a space for the acid to be placed in, then the heat converts the acid in to smoke or fumes.
The vapour doesn’t affect mites under the capped cells, so we recommend that the treatment needs to be repeated once a week over 4 weeks to cover the full gestation cycle. Thereby enabling the emerging Bees to move through the fumes ‘dust’ and the nurse Bees to clean cells and transfer fumes ‘dust’ into cells which will have new eggs added.
2018 For Heavy Mite Loads where Deformed Wing Bees are present in the colony or dying out front – remedial action article for recommended application OAV method click below :
The “Kiwi Oxalic Acid Vaporizer” is available exclusively from kiwimana.
We also sell Extra Oxalic Acid Crystals, these can be found HERE.
The height of the vaporizer is 10 mm, so if your entrance is smaller than this then you will need to lever-up the front of the hive box with your hive-tool – Do not force your vaporiser through a tight entrance as you may damage the units’ wiring.
(See comedy section on video)
You need to seal the hive to make the vaporization more effective, so ensure you can block any meshboards or upper entrances in your Beehive (we use old pillow-cases).
The “Kiwi Oxalic Acid Vaporizer” comes with a FREE – 80gram jar of Oxalic Acid crystals for New Zealand Customers.
Full written instructions found here:
Full VIDEO-instructions can be found here:- How to use the Kiwi Oxalic Acid Vaporizer with Video
How to the Kiwi Oxalic Acid Vaporizer Video
Want to find out more?
Check out Randy Olivers from Scientific Beekeeping thoughts here at http://scientificbeekeeping.com/oxalic-acid-heat-vaporization-and-other-methods-part-2-of-2-parts/
The Battery We use with our Kiwi Oxalic Acid Vaporizers
We used a Sealed lead Acid Battery, these are very lightweight for moving between hives. The Battery needs to be 12 volt and rated at 7 or 8 amps.
You can buy these batteries from us:-